Some PCI endpoint controllers have no alignment constraints, and the epc_features->align becomes 0. In this case, IS_ALIGNED() in epf_ntb_config_spad_bar_alloc() doesn't work well. Check for this before IS_ALIGNED(). Signed-off-by: Shunsuke Mie <mie@xxxxxxxxxx> --- Changes in v2: * Fix the commit message in phrasings and words. --- --- drivers/pci/endpoint/functions/pci-epf-ntb.c | 2 +- drivers/pci/endpoint/functions/pci-epf-vntb.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c index 9a00448c7e61..f74155ee8d72 100644 --- a/drivers/pci/endpoint/functions/pci-epf-ntb.c +++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c @@ -1021,7 +1021,7 @@ static int epf_ntb_config_spad_bar_alloc(struct epf_ntb *ntb, peer_size = peer_epc_features->bar_fixed_size[peer_barno]; /* Check if epc_features is populated incorrectly */ - if ((!IS_ALIGNED(size, align))) + if (align && (!IS_ALIGNED(size, align))) return -EINVAL; spad_count = ntb->spad_count; diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c index 0ea85e1d292e..5e346c0a0f05 100644 --- a/drivers/pci/endpoint/functions/pci-epf-vntb.c +++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c @@ -418,7 +418,7 @@ static int epf_ntb_config_spad_bar_alloc(struct epf_ntb *ntb) size = epc_features->bar_fixed_size[barno]; align = epc_features->align; - if ((!IS_ALIGNED(size, align))) + if (align && !IS_ALIGNED(size, align)) return -EINVAL; spad_count = ntb->spad_count; -- 2.17.1
